System locks up while most of the processes are waiting in cciss_ioctl.

Solution Unverified - Updated -

Issue

  • System locks up, vmcore shows that most of the processes are waiting in cciss_ioctl.
PID: 2528   TASK: ffff81007c225100  CPU: 2   COMMAND: "multipathd"
 #0 [ffff81007ada9b08] schedule at ffffffff80062fa0
 #1 [ffff81007ada9be0] wait_for_completion at ffffffff80063171
 #2 [ffff81007ada9c30] cciss_ioctl at ffffffff880bc177 [cciss]
 #3 [ffff81007ada9d40] blkdev_driver_ioctl at ffffffff8014df26
 #4 [ffff81007ada9d80] blkdev_ioctl at ffffffff8014e577
 #5 [ffff81007ada9ea0] block_ioctl at ffffffff800e8e37
 #6 [ffff81007ada9eb0] do_ioctl at ffffffff80042496
 #7 [ffff81007ada9ed0] vfs_ioctl at ffffffff800304e0
 #8 [ffff81007ada9f40] sys_ioctl at ffffffff8004c89a
 #9 [ffff81007ada9f80] system_call at ffffffff8005d116

Environment

  • Red Hat Enterprise Linux 5
  • HP Smart Array Controller Firmware 2.36

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